Incandescent burner.



C. K. HARDING.

INGANDESCENT BURNER.

APPLICATION FILED APR.14. 1911.

1,006,085, Patented 0011.1?,1911

2 SHEETS-SHEET 1.

C. K. HARDING.

INCANDESCENT BURNER.

APPLICATION FILED APR.14, 1911.

1,006,085. Patented Oct. 17, 1911.

2 SHEETS-SHEET 2.

Qing/6.965, f

COLUMBIA PLANOGRADH CO..WASHINGTDN. D. c.

UNITED STATES PATENT OFFICE.

CHARLES KNOX. HARDING, 0F CHICAGO, ILLINOIS.

INCANDESCENT BURNER.

To all whom fit may concern:

Be it known that I, CHARLES KNOX HARD- ING, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inIncandescent Burners, of which the following is a specification.

This invention relates to burners adapted for use on invertedhydrocarbon incandescent lamps.

An object of the invention is to provide improved means for supporting amantle and connecting the same to the burner tube.

A further object of the invention is to provide an improved gauze ordisk to properly distribute the gas or vapor and to y prevent backhashing `or iiring thereof.

The mantle support hereinafter described is so constructed that it maybe readily applied to the tip of a burner tube, and when in positionwill close all openings around said tube, and confine the vapor to themantle. 1 Y

The invention is illustrated in the accompanying drawings in which-Figure 1 is a top plan view of the device. Fig. 2 is a vertical sectionthereof. Fig. 3 is a perspective View, Fig. 4 is a section and Fig. 5 isa plan view, all illustrating the manner of applying the mantle supportor ring to the burner tube. Fig. 6 is a section at a right angle to Fig.2. Fig. 7 is a perspective view of the mantle and its support. Fig. 8 isa bottom end view of the burner tube. Figs. 9, 10 and 11 arerespectively top and sectional views of a modified form of support.Figs. 12 and 13 are sectional views illustrating the manner of placingsaid modiiied support in position on the tube. Fig. 14 is a bottom viewof the modification. Fig. 15 is a perspective view of the gauze orslotted disk which fits in the burner tip. Fig. 16 is a bottom View of amodified gauze and tip.

Referring specilically to the drawings, 6 indicates an ordinary burnertube which in practice is connected to the vapor supply or generatingdevices as usual. On the lower end of this tube is screwed a tip ring-7which may be made in various forms within the scope of this invention.As shown in Figs. 1 and 3, especially, in one form this ring is flaredas usual, and is provided on its outer side with several projections 8which are spaced apart and which when the mantle is put in positionserve to retain the mantle Specification of Letters Patent.

Application led April 14, 1911.

Patented Oct.,17 1911.

Serial N o. 621,064.

ringin proper place. With this form of tip I use a ring the constructionof which is clear from Figs. 6 and 7 This ring or support consists ofA acupped piece of metal or other suitable material 9 having a centralopening with eccentric or asymmetrical enlargements 10 which correspondin outline or shape to the shape of the projections 8, the main orcentral opening being of proper' size to fit on the burner tip, saidenlargements producing inwardly extendingV pro-- jections 11 which areadapted to rest on the shoulders of the part 7 between the projections8. The depending flange of the cupped piece is grooved or corrugatedaround the same to facilitate the attachment of the mantlel which may beof the usual rag or flexible type, or of the finished or formed type,the mantle being heldV on the fiange of the ring by any suitable meanssuch as a band or thread which will gather the edge of the mantle andbind the same to the ring.

The burner gauze or diaphragm V14 which fits in the burner tip is ofspecial construction. As shown especially in Figs. 8 and 15 the disk isprovided wit-h a series of parallel slots 15 which are of unequallength. These slots extend inwardly from opposite edges of the disktoward the middle, and thereby form a staggered bar 25 extending acrossthe middle of the disk between the inner ends of the slots. There is anadvantage in this, as compared to a gauze having a straight bar, for thereason that if the slots were of equal length with a straight barbetween the vapor issuing from said slots would be divided by a zonewhich would or might produce a dark band or strip along the mantle, inline with said bar, because of insuii'icient supply, but by making theslots of unequal length with a staggered bar between a comparativelyeven flow of gas is maintained, which avoidsthe production of a darkzone on the mantle. The periphery of the disk thus constructed may beprovided with screw threads to screw into the burner tip as shown.

A slotted disk or gauze constructed as above stated has a furtheradvantage in practical operation, explainable as follows. Primarily itmay be stated that slots in such a diaphragm are superior to otherperforations or holes, for the reason that slots will permit the passageof a larger amount of vapor. With a slotted disk, however, the tendencyis to spread the vapor, and consequently the flame in a directionparallel to the slots, as it issues therefrom, thereby forming a broomshaped body of vapor. This tendency however is undesirable because themantle is cylindrical, and theoretically it is desirable that the vaporcolumn be circular in outline, instead of blroom shaped or elliptical asindicated. To correct this tendency of an ordinary slotted gauze Iincrease the slot area as much as possible in a direction at rightangles to the length of the slots. Thus, in the embodiment shown, Iflatten the sides of the disk, as indicated at 30, and when this is setinto the burner tip it produces two side slots 31, located at the end ofthe staggered cross bar, thereby permitting the escape of a certainamount of vapor through said side slots, which vapor, spreading as itissues from the slots will flow or expand in a direction at a rightangle to that of the main slots in the disk, and thereby deliver asubstantially circular body of vapor to the mantle. It is within thescope of my invention to increase this effect, if necessary, by makingthe disk or gauze elliptical in form with its longer axis at a rightangle to the length of the slots so that the tendency of the slots todeliver an elliptical or broom shaped mass of vapor will be corrected orcounteracted by the increased length of the disk in a direction at aright angle to said slots.

In applying the mantle ring or support to the burner tip it is firstplaced thereon in inclined or tilted position as shown in Figs. 3, 4cand 5, one of the enlargements l0 of the central opening receiving theupper part of the tip, above the shoulder thereof, with the ring in suchposition that the projections 8 will pass'through the other enlargementswhen the mantle is tilted back to vertical position, the action beingindicated in dotted lines in Fig. 4l, and then the projections l1 areslipped into the spaces between the projections 8 on the burner tip, andthe projections 11 on the ring will rest on the shoulder of the tip andthus support the mantle in vertical position, the projections 8 fittingin the recesses 10, as shown in Fig. l, thereby holding the mantle inproper position and preventing accidental dislodgment.

Also, when the ring is so applied, it will close all openings around theburner tip, and so the vapor supplied through the tube will be confinedwithin the mantle. This is important since it prevents the escape ofcombustible vapor upwardly between the mantle ring and burner tip, whichresults in a waste of gas and is a defect of such existing mantle ringsas are spaced from the burner tip and have simply lingers or projectionsto support the same thereon.

In Figs. 9 to 14 a modification is illus-v trated consisting in this,that instead of having three eccentric recesses or enlargements asdescribed, the opening in the ring is elliptical and the shoulder on theexterior of the burner tip is shaped to correspond, the recess beingindicated at 10a and the shoulder at Sa, and the mantle supporting ringis placed in position by entering the burner tip through said openingwith the ring at an angle so that it will pass the tip, and then tiltingthe mantle back to vertical position and seating the ring on the tipwith the shoulder fitting in proper position in the elliptical opening.

Obviously the shape of the opening in the mantle supporting ring may bevaried in many ways, with the same result as above indicated.

In Fig. 16 I show an embodiment in which the disk or gauze is ellipticalin form, as above suggested, and to receive this gauze the tip 7a ismade elliptical in form. This precludes the use of screw threads, butthe gauze can be fitted tightly in the tip and held by friction orotherwise, and the carrier will have an elliptical hole corresponding inshape to the elliptical tip on which it fits. This form of gauze ifproperly proportioned will give a perfect circular flow of vapor orllame into the mantle.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. The combination with a burner tube havinga tip at the lower end thereof provided with outwardly extendingprojections so that it is non-circular in outline, of a ring to which amantle may be attached, said ring having a central opening withenlargements, and of sufficient size to permit the tip to pass throughthe opening by tilting the ring, the outline of the enlargementscorresponding to the outline of the projections, so that the projectionswill fit in said enlargements when the ring is turned to properposition.

2. The combination with a burner tube having an enlarged tip at thelower end thereof with a shoulder provided with projections above thelower rim of the tip, of a ring to which a mantle may be attached, saidring having a central opening with enlargements of sucient size topermit the tip to pass through the opening by tilting the ring, the sizeand outline of the enlargements corresponding to that of theprojections, so that the projections fit in said enlargements when thering is turned to proper position to rest on the shoulder of the tip.

3. The combination with a burner tube having a flaring tip at the lowerend with elliptiform projections on t-he outside thereof, of a ring towhich a mantle may be attached, said ring having an elliptiform openingtherein, through which opening the tip will pass when the ring is tiltedand n turned to a certain position, the opening being of the sameoutline as said projections so that the latter will fit in and iill theopening when the ring is linally seated on the tip.

4. A diaphragm disk for gas burners, adapted to lit in the tip of aburner tube, 'said disk having slots of unequal lengths extending fromopposite edges thereof toward the middle, with a staggered bar extendingacross the middle of said disk between the inner ends of the slots.

5. A diaphragm disk for gas burners, adapted to it in the tip of aburner tube, said disk having slots extending from opposite edgesthereof toward the middle, with Copies of this patent may be obtainedfor five cents each, by addressing' the Commissioner of Washington, D.C.

a bar extending across the disk between the inner ends of the slots, andalso having flattened portions at the ends of said bar, forming slotsbetween the disk and the tip. 6. In a burner, the combination of anelliptiform tip, and a slotted elliptiform disk therein, the slots beingat an angle to the longer axis of the disk.

In testimony whereof, I aix my signature in presence of two witnesses.

CHARLES KNOX HARDING. Witnesses:

Gno. E. TEW, C. W. FowLER.

Patents,

